UPSC PRELIMS · GEOGRAPHY · SCIENCE & TECHNOLOGY — SPACE TECHNOLOGY
The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft. The experiment in question refers to
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EXPLANATION
The described three-spacecraft laser interferometer is the proposed Evolved LISA/LISA mission; LISA Pathfinder was its technology-demonstration precursor.
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